Diestock



Oct. 18, 1932. R. B. PEALER 1,883,397

DIEsTocK Filed Aug. 16, 1950 gwuenko@ dtes/MV Patented ocnls', 1932l UNITED STATES PA'rE15113` OFFICE ROBERT B. PEALER, OFWARREN; oHro, AssIGNoI "ro-THEk Bomann coMPANY, or j' Y WARREN,v oHIoA CORPORATION or oHIo Y nins'roox Application med Agust 16,11e3o.' sriarmf4`7513.

This invention relates to a die stock of the type wherein the chasers are settable forv In thedrawing Fig. 1 isa face'view of my die stock. Fig. 2 is a side elevation thereof.Y

Fig. 3 is an axial section. Fig. 4 is a face Y view of the clampingk plate shownv in Fig. 1.

Fig. 5 is a fragmentary view of a `portion of the die stock illustrating the parts controlling the adjustment.L j Y n The frame -of my diestockcomprises a suitable hollow member 10, which may be. a single integral casting carrying threadV cutting chasers adjacent one end, and formed into a suitable pipe guide 11 adjacent the other end, and intermediatelyxhaving externil means whereby the frame may be rotate I have shown in the drawing as a means for rotating the frame, suitable notches orV teeth 12, made in the intermediate body of the frame, and a ring 20 surrounding this intermediate region and having handle sockets 21 and carrying a pair of ratchet pawls 22 and 23 coacting with the frame teeth. Each pawl is shown as mounted in a recess in the driving frame 20 and is 'pressed inwardly by a spring 25 compressed between a shoulder on the pawl and a'y bushing 27 carried by the driving frame. The pawl has a shank 28 extending through and carrying a head 29 by which the pawl may be withdrawn.l Preferably two pawls are employed, offset lone from the other by the distance of half a tooth, thereby reduc' ing the angular movement required" by the operating handle for the engagement of successive teeth. Y

My die stock is illustrated in theedrawin'gH :fully explained,

this bushing,

On one side of its intermediate region, the

frame isprovided with a number of'equi-dis-k tant housings for the chasers, each housing comprising a pair of parallel bosses 14 and 13 leaving a parallel-sided recess between them. Each recess is adapted to bev occupied bya parallel-sided' chaser V30. On opposite sides, the ch'aser is slidably guided by the bosses 12V and 13, while theinner face of the chaser rests upon the frame 10 atV the bottom'of'vthehous-A ing, which in'this region lies in .aVv single plane. e0 Each Chaser 30 is formed with an upstanding Y lug or pin 31 which is adapted to coact with an annular clamping plate which serves the double purpose of holding the chasers down kagainst the frame. and of defining their posies tions The clamping plate above mentioned may be of the vform shown at 40 in Figs. 1 and 4. It has a central openingV 41, of diameter suicient to clear the pipe, and is provided with x groups of holes, as 43, 44 and 45, individually at different distances from the axis and yany onerof which stands over the respective chaser-receiving recesses, and can be occupied by the corresponding pin 31015 the chaser. The

clamping plate is held in place by screws 50, which pass through itin variable regions into threaded openings in frame bosses which are, in effect, enlargementsof the frame portionr 13,7constituting one side of the chaser housso ing. These screws have heads bearing on the. outer face of Vthe clamping plate and thus heldrigidlyin place to positively define the position of the chasers against movement in ,y the outward or inward direction. The chasers have the same height as the housings, or if desired, may be atrifle higher to insure the plate clamping directly on the chasers themselves. Y V

The adjustment, either for diil'erent sizes 90 of pipe or for variations of the standard size, is readily eii'ected by'employing the clamping plate 40 illustrated in Figs. 1 and 4.y The plate. there shown has three holes, 43, 44 and 45, eithereo which may receive a cha-ser pin 31 and thus hold the cha-ser in three different positions.. When this construction is em# ployed, there may be three holes available for each of the bolts 50, but it is simpler to employ an' arcuatev slot as shown at 48, so that 100 Vvantages of lightness, compactness,

the bolt does not have to be entirely removed toY enable the plate to loe shifted.

It will be seen that my die stock comprises through it, means passing through the slot for i locking the ring to the frame in various positions, said ring having groups of holes through it all located back from the inner periphery of the ring and individually at varying distances therefrom, and chasers rectangular'in cross section standing on one of their narrow edges in guidesand having pins projecting from their other narrow edges, each pin beingadapted to occupy any of the holes 'l of the groupncorresponding to that guide.

In testimony whereof, hereunto ailix my signature.

v ROBERT B. PEALER.

guides with clearance 

